Water-motor.



110.721,661. PATBNTEJ M11-11.3, 190s. B. B. BOWER. WATER 1101011.

APPLICATION FILED AUG. 21, 1900.

. I llllllllll. Ll Il LIN! .Afa

. bridge, in the county of Decatur and State of ,ful ImprovementsinAWater-Motors, of whichY UNITED1 STATES PATENT OFFICE.

BYRON B. BOWER, OF BAINBRIDGE, GEORGIA.`

WATER-MOTOR'.

` SPECIFICATION forming part of Letters Patent No. 721,661, dated March3, 190s Appncaanrieaiuguazi.1900. seen 110.21606. (No model.) Y

To all whom, it may concern:

Beit known thatI, BYRON B. Bowne, a citizen of the United States,residing at Bain- Georgia, have invented certain new and usethefollowing is a specification. ,invention relates to double-actingreciprocating Water-motors wherein an end wisemovable cylindrical valve,which constitutes the cylinder for the pistou, is arranged to bereciprocated in a casing having a central and two end chambers.

The object Vof the invention is to eliminatev all back strain orretardation of the main shaft by reason of internal pressure of Waterupon surfaces of the cylindrical valve and to cause such pressure to beentirely expended in holding the valve inthe position it should occupyand also to so construct and organize the parts as to render exactfitting of the cylindrical surfaces unnecessary, all as herein-Y afterset forth in detail. In 'the accompanyingr drawings, Figure shows a sideelevation of a water-engine with my improvements applied. Fig.f2 is aview, on an enlarged scale and in longitudinal section, of the Vcasingand theparts contained therein, Fig. 3 is a view in transverse sectionon the line 3 3 ofvFig. 2, but on a reduced scale. l

The casing A is made in two sections formedwith flanges a, which arebolted together, as indicated. Within the casing there avre'threechambers-a middle or central chamber A and end chambers AZAS. Betweenthe chambers A2 and A3, respectively, and the central chamber A areannular flanges a', which act as guides for the cylindrical valve B. Theexact proportions in size of the chambers A', A2, and A3 is not vital;but preferably the area of each of the chambers Azand A3 is somewhatless than one-third of the'area of the chamber A. Each chamber A2 andAfa-.is provided with an annular series of exit-ports as a4 just insidethe flanges et', and the entrancefport for the water is in the couplingrE, located about midway between the ends of the chamber A. 4

The cylinder B acts both to guide the piston-head C and also as a valveto regulate the entrance and discharge of the fiuid. This cylinderextends through the central chamber A' and into the chambers A2 A3. Atits opposite ends it isl formed with annular iianges b, which are alwaysarranged'within the chambers A2 A3, and at a short distance gtherefromare formed annular anges b, which are also arranged at all times withinthe chambers A2 A3.

Annular lianges a5 are formed on the inte- `rior of the casing just'inside .the flanges l1..

.These flanges a5 limit the inward movement of the flanges b. The inwardmovement of -the valve is also limitedwhen the anges b' abut against theflanges et. f-Theangesb fit water-tight in the chambersAAS, and thecylinder B fits water-tight the flanges a', while being free toreciprocate therein: The cylinder B is also formed with fianges bm nearopposite ends for limiting its movement.

` Ports B2 B3 are formed'in' the sides lofy the cylinder B some distancefrom each end there- Qi". Preferably I employ an' annular series ofopenings or ports in order to obtain-a large area for the entrance anddischarge of` water. These ports B2 Bare soarran ged that at times theyare located within the chamber `A and at times within the chambers A2 ABin the manner hereinafter described.

The piston yC is arranged to reciprocate within the cylinder B, andtherod c Aextends through packings c and is connected with a block I, whichis adapted to reciprocate vertically in guide-frames 0,'mounted on thetop ofthe casing. The 'sliding blockl is pivotally connected at t witha' pitman I, which is jointed at its upper end to an-arm J, secured 'toa shaft K, to which is secured' a bandwheeltindicated by the dotted'lines N) for communicating power to the mechanism to be driven. l Y.

Securedto the shaft K is a cam L, preferably of the shape shown andwhich is adapted to bear upon rollers Z, carried by a frame M,

which is 'provided with a slotted opening m,

through which the shaft K entends. r This frame is connected by a pitmanlH to a link G, that is jointed to the end of a spring-leverF,

`pivoted at f to the guide-frame@v and jointed IOC- the piston the leverF is operated to move the cylindrical Valve back and forth at propertimes to shift the valve B in such manner as to alternately change theow of Water from one side of the piston to the other.

When water is admitted through the coupling E, it passes into thechamber A', surrounding the cylindrical valve, and when the parts are inthe position shown in Fig. 2 the water passes from the chamber A.through the ports B:2 in the upper part of the valve B down against thepiston-head C, which will be driven in the direction indicated by thearrow. The water below the piston will pass out through the ports B3 andthrough the ports a3 to the outside. As soon as the piston has reachedthe limit of its downward movement the cam M acts upon the partsconnected therewith to raise the rod D, and thus raise the cylindricalvalve B, so thatl the ports B2 will be changed from the chamber A to thechamber A3 and the ports B3 from the chamber A2 will be changed to thechamber A', at which time the water will enter through the ports B3 andact upon the under side of the piston-head, causing it to move inwardly,and the water above the piston will pass through the ports B2 anddirectly through the ports a4 to the outside. The cylindrical valve isshifted alternately in this way, and water is thus alternately admittedto opposite sides of the piston-rod at proper times to cause itsreciprocation.

It will be observed that the cylindrical valve B is of large size andthe ports are of large area, permitting large volumes of water to beadmitted and discharged at each operation, thus obtaining great powerand uniformity in action. The engine may also be operated at high speed.

The cylindrical valve and cylinder are entirely open or unobstructed atboth ends, and the annular ilanges fit the chambers A2 A3. Since the[langes b bear against flanges a3 and flanges b against flanges a', whenthe cylinder is in either of its positions they form a packing orclosure to prevent passage of water between them, and if their faces beproperly turned or ground to seat accurately a particularly close tit ofthe cylinder in its bearings is not required, and it will at all timeswork easily notwithstanding the tendency of its surfaces to corrode orreceive deposits from the water. Moreover, as may readily be seen fromthe drawings, all pressure of water on the inlet side of the piston thatis exerted upon the cylinder endwise is expended upon the ange b andserves, therefore, to hold the cylinder in the position it shouldoccupy. There is no such pressure tending to move the cylinder in theopposite direction, (in either ofits positions,) and therefore there isalso no tendency for a retarding strain or load to be thrown upon themain shaft of the engine. So far as I know this behavior of an engine ofthis general type and the construction by which it is attained are new.

I claim as my inventionm l. In a double-acting reciprocating watermotor,a casing divided into acentral and end chambers by interior annular[langes outside of each of which there is another interiorannularflangeand between thetwosetsoftlanges discharge-ports in thewalls of the casing, the water-inlet being formed in the wall of thecentral chamber, combined with a cylinder open at both ends, fitted tobe reciprocated in the casing, having a series of ports in its Wallsadjacent its ends, and exterior annular flanges cooperating with theiianges on the casing, and a piston reciprocating in the cylinder.

2. In a double-acting reciprocating watermotor, a casing divided byinternal annular flanges into three chambers, a water-inlet to thecentral chamber, exit-ports in the end chambers, a cylinder having portsnear each end, fitted to be reciprocated in the casing, acting as avalve,and at each end entirely open and formed with an exterior annularflange fitting the end chamber, and a piston reciprocating in thecylinder.

In testimony whereof I have hereunto subscribed my name.

BYRON B. BOWER.

Witnesses:

B. C. DECKINsoN, W. G. D. Tonen.

